CHERNIKOV, N. S. On groups factorized by two subgroups with Chernikov commutants. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 52, n. 3, p. 396–402, 2000. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4429. Acesso em: 5 dec. 2025.